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 \ \\/ //  \ \\/ // |      \\  \ \\/ // | || | || 
  \   //    \ ` //  |  --  //   \ ` //  | '--' || 
  / . \\     | ||   |  --  \\    | ||   | .--. || 
 /_//\_\\    |_||   |______//    |_||   |_|| |_|| 
 `-`  --`    `-`'   `------`     `-`'   `-`  `-`

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發送短信 : Aerodynamics of badminton shuttlecock : Characterization of flow around a conical skirt with gaps, behind a hemispherical dome